collateral vs incidental

collateral

adj
  • Coming or directed along the side. 

  • Expensive to the extent of being paid through a loan. 

  • Of an indirect ancestral relationship, as opposed to lineal descendency. 

  • Acting in an indirect way. 

  • Parallel, along the same vein, side by side. 

  • Being aside from the main subject, target, or goal. 

  • Relating to a collateral in the sense of an obligation or security. 

  • Corresponding; accompanying, concomitant. 

  • Having the phloem and xylem adjacent. 

noun
  • Printed materials or content of electronic media used to enhance sales of products (short form of collateral material). 

  • A security or guarantee (usually an asset) pledged for the repayment of a loan if one cannot procure enough funds to repay. 

  • A thinner blood vessel providing an alternate route to blood flow in case the main vessel becomes occluded. 

  • A branch of a bodily part or system of organs. 

incidental

adj
  • Existing tangentially, being a byproduct, a tangent, or a likely consequence. 

  • Entering or approaching, prior to reflection (more frequently incident). 

  • Occurring by chance. 

  • Loosely associated; of limited relevance except indirectly; only accidentally related. 

noun
  • Something that is incidental. 

  • Minor items, not further defined. Incidental expense. 

How often have the words collateral and incidental occurred in a corpus of books? (source: Google Ngram Viewer )